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Kernel en cours

uname -r

Kernels installés

ls -l /boot/vmlinuz-*

Rocky 9

/boot/loader/entries/858382f092494811bf89e090de079ab1-0-rescue.conf:title Rocky Linux (0-rescue-858382f092494811bf89e090de079ab1) 9.5 (Blue Onyx) /boot/loader/entries/858382f092494811bf89e090de079ab1-5.14.0-503.14.1.el9_5.x86_64.conf:title Rocky Linux (5.14.0-503.14.1.el9_5.x86_64) 9.5 (Blue Onyx) /boot/loader/entries/a343998b88a34ce78a8a06339e65eeab-5.14.0-503.33.1.el9_5.x86_64.conf:title Rocky Linux (5.14.0-503.33.1.el9_5.x86_64) 9.5 (Blue Onyx) /boot/loader/entries/a343998b88a34ce78a8a06339e65eeab-0-rescue.conf:title Rocky Linux (0-rescue-a343998b88a34ce78a8a06339e65eeab) 9.5 (Blue Onyx)

Debian 12 (proxmxo)

grep -P "submenu|menuentry" /boot/grub/grub.cfg | cut -d "'" -f2

Changer le kernel

Rocky9

Prochain kernel au boot

grub2-editenv list

Forcer le prochain kernel au boot

grub2-reboot "Rocky Linux (5.14.0-503.14.1.el9_5.x86_64) 9.5 (Blue Onyx)"

Changer definitivement le kernel au boot

grub2-set-default "Rocky Linux (5.14.0-503.33.1.el9_5.x86_64) 9.5 (Blue Onyx)"

Proxmox 8

Prochain kernel au boot

grep GRUB_DEFAULT /etc/default/grub 

0
* C'est le 1er koernel qui va booter 
grep -P "submenu|menuentry" /boot/grub/grub.cfg

if [ x"${feature_menuentry_id}" = xy ]; then
  menuentry_id_option="--id"
  menuentry_id_option=""
export menuentry_id_option
menuentry 'Proxmox VE GNU/Linux' --class proxmox --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-f768d6b7-5898-4c6b-827d-aab79581f769' {
submenu 'Advanced options for Proxmox VE GNU/Linux' $menuentry_id_option 'gnulinux-advanced-f768d6b7-5898-4c6b-827d-aab79581f769' {
        menuentry 'Proxmox VE GNU/Linux, with Linux 6.8.12-9-pve' --class proxmox --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.8.12-9-pve-advanced-f768d6b7-5898-4c6b-827d-aab79581f769' {
        menuentry 'Proxmox VE GNU/Linux, with Linux 6.8.12-9-pve (recovery mode)' --class proxmox --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.8.12-9-pve-recovery-f768d6b7-5898-4c6b-827d-aab79581f769' {
        menuentry 'Proxmox VE GNU/Linux, with Linux 6.8.12-8-pve' --class proxmox --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.8.12-8-pve-advanced-f768d6b7-5898-4c6b-827d-aab79581f769' {
        menuentry 'Proxmox VE GNU/Linux, with Linux 6.8.12-8-pve (recovery mode)' --class proxmox --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.8.12-8-pve-recovery-f768d6b7-5898-4c6b-827d-aab79581f769' {
* Ici ca sera Proxmox VE GNU/Linux, with Linux 6.8.12-9-pve

Forcer le prochain kernel au boot

grub2-reboot "Rocky Linux (5.14.0-503.14.1.el9_5.x86_64) 9.5 (Blue Onyx)"

Changer definitivement le kernel au boot

grub2-set-default "Rocky Linux (5.14.0-503.33.1.el9_5.x86_64) 9.5 (Blue Onyx)"